/*********************************************************************
 * Copyright (C) 2003 Andrew Khan
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.biff.drawing;

import jxl.biff.IntegerHelper;
import jxl.common.Logger;

/**
 * The Sp escher atom
 */
class Sp extends EscherAtom {
    /**
     * The logger
     */
    private static Logger logger = Logger.getLogger(Sp.class);

    /**
     * The binary data
     */
    private byte[] data;

    /**
     * The shape type
     */
    private int shapeType;

    /**
     * The shape id
     */
    private int shapeId;

    /**
     * The Sp persistence flags
     */
    private int persistenceFlags;

    /**
     * Constructor
     *
     * @param erd the entity record data
     */
    public Sp(EscherRecordData erd) {
        super(erd);
        shapeType = getInstance();
        byte[] bytes = getBytes();
        shapeId = IntegerHelper.getInt(bytes[0], bytes[1], bytes[2], bytes[3]);
        persistenceFlags = IntegerHelper.getInt(bytes[4], bytes[5],
                bytes[6], bytes[7]);
    }

    /**
     * Constructor - used when writing
     *
     * @param st the shape type
     * @param sid the shape id
     * @param p persistence flags
     */
    public Sp(ShapeType st, int sid, int p) {
        super(EscherRecordType.SP);
        setVersion(2);
        shapeType = st.getValue();
        shapeId = sid;
        persistenceFlags = p;
        setInstance(shapeType);
    }

    /**
     * Accessor for the shape id
     *
     * @return the shape id
     */
    int getShapeId() {
        return shapeId;
    }

    /**
     * Accessor for the shape type
     *
     * @return the shape type
     */
    int getShapeType() {
        return shapeType;
    }

    /**
     * Gets the data
     *
     * @return the binary data
     */
    byte[] getData() {
        data = new byte[8];
        IntegerHelper.getFourBytes(shapeId, data, 0);
        IntegerHelper.getFourBytes(persistenceFlags, data, 4);
        return setHeaderData(data);
    }
}
